Polishing-machine.



E. GAVIGCHI. POLISHING MACHINE. APPLICATION FILEDTEB. 18, 1909.

931,383. Patented Aug. 17,1909.

s sHEBT's-SHEBT 2.

E., GAVICGHI. PQLISHING MACHINE. APPLIOATION FILED PEB. 1s. 1909.

. Patented Aug. 17, 1909.

3 SHEETS-SHEET 3.

55 lim-aai Geinig. a Figi; 7

'entrants-'raras ra'rnnr onirica.

ERCOLE CAVICCHI, OF QUINGY, MASSACUSETTS.

PomsHIN'G-MACHINE.

No; 931,3213;y

Specification of Letters Patent.

Patented Aug. 17, 1909.

. Application led February 18, 1909., Serial Noli-$78,535.

ot lVIassachusett-s, 'have invented a certain new and' useful Improvementv in Polishing'- Machines, of which the following is a speci cation. reference being had therein to the accompanying drawings.H V

"#- `The i-na-'ention relates to an improvement in'v polishing machines especially intended tor use-in fpolishing stone but which is adapted t'or usein polishing other material than stone'. if'

The main object of the invention is to pro-vide a polishingr machine mounted on a portable support whereby the apparatus as a Vwhole may be moved from one point to anotherA as desired and also when the sup- 210 port is placed in any positiondesired, the

polishing `tool may be moved in any direction iu any plane' without movingthe ,main support on which the apparatus is n'iounted.

moreV fully'hereinafter set forth.

ln carrying-out my invent-ion l provide a motor mounted upon a suitable base which in turn is mounted upon a suitable port-able standard vin 4a nianner whereby the base both a rockingand a-l swiveling movement with relation tort-he Standard, that is., it has a universal movement, and lf.' also provide a carriagev also supported by said base which is movable longitudinally with relation to said base while supported by it, and said carriage carries the-trool-hold-er and the driving mechanism for the tool, said tool-holder being capable of' universal movement.. indeor ot the base.

40 pendentlv of: the movement ot' the carriatfre The linvention Will be fully understood- -t'rom the tollowingdescription taken in connection with the accompanying drawings,

and' the novel features are .pointed out and clearly defined in ,the claims at the close of the specification. f

ln the drawings,-Figure l is an elevational view ot a stone polish-ing machine.

I Fig; 2 is a plan View thereof. Fig. 3 is an enlarged sectional view on line- 3 3 of Fig. Q. Figs. .l is a section online 1 -4 of' Fig. 3. Fis of Fig'. Fig. 6 is-'an enlarged section on Other oliiects of the invention will appear.

; 5 is an enlarged section on line .is-a detail view i ot the base which supports the motor. Fig.

8 is a detail view of cap therefor. VFig. 9 is a view of the t'ace of the tool. section on line 10-1'Q'of Fig. 5. Fg; 11 isa detail View ot the gear Wheel with hubs.

In the .torm'of construction shown in the drawings, the base A which supports the motor and Ycarriage is pivotally connected with a cross head or fork Bwhich is mounted b v a swivel connection on a' rod or standard 1 which is adjustably connected with a socket 2. of a portable stand, such for instance as the tripod 3. The standard' 1 which passes through the socket 2 is adjustable vertically and may be clamped in any adjusted position by the set screw 4.

The. swivel connection of the fork E with the rod 1 is shown in Fig. 3. The fork B is' provided with two upright arms 5, A5, (see Fig. 4.-) and with a hollow stem 6 in which the standard 1 turns', heilig secured therein by a screw 7 which passes through ahole in the side ot' the stem 6 .and engages with a circumferential groove 8 in the rod'- 1.

The based-l1 is connected. with the fork B by the two pivot. pins 9, 9, (see Fig. 4) which passthrough holes 91 in the sides 10, 10, ot the base A inv such manner as to allow a tiltingl motion of the base on the fork B.

Mounted upon the base A alsov is a'motor 11 which, in the form shown in the drawings, is an electric motor. provided with a sha't't 12 carrying thereon a pinion 13 which engages with a gear 14: having' projecting from one side thereof a long` hollow hub 15 which is seated in the box 16 otl the base A.' The hub 15 isv formed `with an annular {tang-e 151 on the outer endE against which the end of the box 16 abuis to preventongitudinal movement of the hub in the iox. gear 14 is a slotted hollow hub 17 having pivoted to the ears ,171VY thereof the rollersl Passing* through the two-hubs '15, 1f?, and tl'xrough the gear 14 is a shaft 19' carrying; on

its forward' 'end' a bevel gear 20 which engages with a bevel gear 21 mountedi on the ig. 10 is The motor 11 is Projecting` from the other side of the bevel `ear 21 is provided with a hollow hubl 25 through which the shaft 2Q passes and' which rests np'on tl1e "bottom of the' casel 26 .ina which the gears 20 QIiYreiinclosed. The

upper end of the shaft 22 is journaled in a bearing 27 at the upper end of the case 26 and the case is thereby supported by t-he shaft. The hub 25 is loosely splined to the shaft `22 as byaspline 221 in such manner that when the gear 21'revolves, the shaft`22 -must also revolve, but'the shaft 22 may have a longitudinal movement with rel l hub an ation to the gear. I

A washer 28 is provided onthe upper end of the shaft 22 between the shaft and the bearings. The object of having the shaft 22 capable of a slight longitudinal movement within the hub 25 is to allow for the wear.

sides for such portion of its length as will permit the desired range of longitudinal or sliding movement of the shaft while still partaking of a rotary movement.

The rear end of the shaftjs circular in cross section and is supported and .has its bearing in the cross-piece 30 with which the track .bars 31, 31, hereinafter to beexplained are connected. The forward end of the shaft 19 passes through the box .2,9 into the case 26 and as already stated' carries on its forward end the bevel gear 20. The rollers 18 are preferably provided with roller bearings 32 between the rollers 18 and the pins 33 011 which they are mounted.

The track bars 31 are secured at their rear ends to the cross-piece 30l'and are secured at their forward ends to the sides of the case 26 to which also is secured a handle 34 whereby the track bars, thel c ase and thepolishing tool may be moved back and forth or in any desired direction.

The track bars pass lbetween suitable supports and anti-friction devices whereby the track bars may be properly supported and permitted to be moved back and-forth. The

' preferred form of supports and anti-friction devices are as fllows: Each track bar is supported by and passes between two rollers 36, one on the under and the other on the upper side, and two blocks 37, 38, one on the upper and the other on' the under side, so disposed that one of the blocksl comes over one of the rollers and the other roller comes over the other block. These blocks and rollers are all mounted upon t-he base A. By

means of the handle '34 the case 26 and tlf' .track bars 31 may be movedv back and forth upon the base A so that the "polishing tool may be given a forward and back movement. The entire base A may also bey/rocked on its pixtot pins 9, 9. by reason of the pivotal connection ofthe base with -the fork-B on the horizontal ivots 9, 9, and thereby the track bars and tie polishing apparatus may be given a rocking movement in a vertical plane and by reason of the swivel fork 6 the apparatus may be swiveled upon'the rod 1y .lugs 39, 39, 39, 39, for the feet of the motor to rest npon and to which the motor is fastened by screws entering the screw holes 40 in the blocks 39. The roller 36 is pivoted tol an ear 41 projecting upward from and,

formed integral with the lbase A and the roller is pivoted in an ear 42 extending downwardly from and integral 4with the base A.

In operation, the tool 24 will rest on the surface of the stone 43 which is beinlg polished, and may be moved back and forth or laterally over the surface of the stone by the handle 34, by the movement of the track bars `and the swiveling movement ofv the base. Any slight inequalities in the surface will be allowed `for bythe universal joint connection of the tool 24 with the shaft 22, and`any considerable variation in the level of the stone is lprovided for by the pivot L`connection of the base A with the standard by the pins 9, 9.- In order to adjust the apparatus for stones of different height, the standard 1 may be raised or lowered and clamped in its adjusted position by the set screw 4.

While I have shown an electricl motor in connection` with my apparatus I do. not intend to limit myself to the use of an electric motor. Any suitable power driven motoil may be employed. It is also obvious that while I* have described the inventionV as especially intended for polishing apparatus some other kind of a tool than a polishing' tool may be connected with andoperated byA n, and' "it lsmy purpose to have the claims cover such use.

What I claim 1s:

the driving mechanisi 1. In a polishing machine, a mount, a

portable standard on which said'mount is supported, a vunlversal joint connect1on.be'

tween said mount and -said standard where-l by the mount is adapted to be rotated on a vertical axis and rocked on a horizontal axis, a motor supported on said mount,a reciprocable carriage supported on said mount, and freciproeable with relation thereto; a rotary shaft secured tosaid carriage, driving mechanism connecting said motor with said shaft whereby said shaft i's rotated, a

second rotary shaft having driving connec- A, reci1'n ocable .v carriage su ported on saidmount, and reclprocable wlth relation there- A tion with said first mentioned rotary shaft, and means whereby a tool may be connected with said second shaft and operated thereby.

2. In 'a 'Stenedpolishing machine',j amount, ,v a portable stan ar d on which said mount is supported, la universal joint `connection,` betweenaidfmount and said standard, whereby thetmount is adapted to be rotated on a vertical axis and to be rocked on a horizontal axis,` a mot-or supported Aon said mount, a

to, arotary shaft securedv to said carriage, driving mechanism connecting said motor with said shaft whereby 'said shaft is rotated, saidcarriage and shaft being movable longitudin lly with rela-tion, to the driving mechanism', a rotary shaft having driving connection with said first mentioned ,rotary shaft, a tool and a universal joint connection btweensaid tool and said second shaft. 3. In apolishing machine, a mount, a portable standard for said mount," a universal 'oint connection between said mount and said standard, whereby said mount is adapted to be rotated 011 a vertical axis and rocked on -a horizontal axis, a motor, a reciprocable carriage sup orted on said mount, a. tool, a holder there or, a universal joint connection between said tool and said tool holder, means whereby Said tool holder is connected with said carriage and driving mechanism connecting said motor with said tool holder. 'i l Y K 4. In a polishing machine, a mount, a port-able standard for said mount, a universal joint connection betweensaid mount and said standard, a motor supported on said mount, a reciprocable carriage .on said mount and movable with relation thereto, a tool, a holderatherefor, a driving shaft vhaving driving connection with said tool holder, said driving shaftbeing mounted on rsaid carriage and movable longitudinally therewith, and driving connection between y said Vshaft and ,said motor whereby said shaft maybe rotated independently of its A longitudinalreciprocable movement.

5. In a -polishing machine, a mount, a portable standard for said mount, a umversal joint `connectlon between sald mount and said standard, a motor, a reciproc'ablecarriage .on said', mount and movable with relation thereto, a polishing lcool, a holder therefor, a-driving s aft havlng driving'connectionfwith said toolholder, said drivin fshaft being .mounted on ysaid carria e an l inovable longitudinally therewith, sai driv- -mg vshatt being rotatable lindependentlyof' the movement -of said carriage and having `a portion' intermediate its endsnon-circular in cross" srectionya `driving wheel looselyI mountedon said noncircular portion of Asaid shaft,rsaid driving wheel having a hub i with a non-,circular passage through which" the non-circular cportion ofthe`shat eX- tends, .whereby the shaft is caused to rotate with said driving wheel and is longitudinally movable `with relation thereto and wheel iwith saidmotor.

A6. In a polishing machine, a mount, a portable standard for said mou-nt, a universal joint connection between said mount and said Istandard, a motor, a rcciprocable carriageJ supported on said mount, a 'rotatable shaft journaled in said carriage, said shaft having a'portiolrof its length non-circular in cross-section, a driving wheel looselyr mounted on the non-circular portion of said shaft whereby said driving shaft is longitudinally movable through said driving wheel and a slotted hub projecting from one side of said driving Wheel having a non-circular passage through which said non-ciw` cular portion of the shaft passes whereby the rotary movement. ofsaid 'wheel is in1- parted to said shaft, driving mechanism connecting said wheel with said motor, a rotary tool holder and driving mechanism connecting saidtool holder with said shaft.

7. In a polishing machine, a. mount, a standard for said mount, a universal joint connection between said mount and saidstandard, a'motor, a reciprocable carriage supported on said mount', a rotatable shaft having its bearings in said,carriage, said shaft having a portion of its length nonciry drivingl mechanism connecting said driving cular in cross section, a driving wheel loosely mounted on the non-circular portion of said shaft whereby said driving shaft is longitudinally movable through said driving wheel, a slotted hub projecting from one side of said driving Wheel having anon-circular passage through which sald non-circular portion of the shaft passes whereby the rotary movement of said Wheelis imparted to said shaft, driving' mechanisnr'connccting said wheel with said mot0'r,a orotary tool holder, a. rotary shaft connected therewith,

"said second rotary, lshaftbeing at right angles with'said first mentioned shaft, gear connection between said shafts, a case for' said gear connections, said case being supported by said carriage andmovablc therewith. i l l 8.A In a polishing mach-ine, a mount, a cross head `to which said mount is pivoted on horizontal Vpivots'Wh'erebyfthe mount is capable of a rocking movementin ya vertical lane, astandard on which said cross head '1s mounted and havin@v aswivel connection therewith 'hereby` said cross head is rotatable on a l,vertical'aXis in a horizontal plane,`

)means for vertically adjusting said ,cross h ead 'to' varying elevations', a `carriage' supvported on said mount and reciprocable thereonfa rotary shaft-jonrhaledin said carria e and Lmovable longitudinal-lyv 'therewit i, means forLr'otating said shaft independently v` of the movement of' the carriage, ai tool, i means for supporting said tool connected with said carriage whereb the tool is movable with the carria e, an driving mcchanism connecting sai Shaft. v

9. In a polishing machine, a base, a..port'- able standard 'for saidbase, a 'n iotor', a reciprocable carriage comprising two parallel- 1o track bars ri 'dly connected together sup ported on sai base, each of' said track bars 'having two supports on both its upper and under side, one ofsaid upper supports being a lug projecting -rom'the said base and the o thernpper support being an anti-friction roller journaled 1n said base, the under supf ports-of each of said track bars being an anti-frictionv roller journaled in said base and a lug projecting from said base said base being ormedwith lugson which said motor is supported, a drivin shaft jonrnaled in said carriageand movailetherewith,` and rotatable independently' thereof,l said` base bein formed with aboli-through which said shaft passes, driving mechanism con'- necting said motor with said driving shaft and a tool operatively connected 'with said shaft. I

1 -0.' In a polishing machine, 4a mount, a standard for said mount, a universal joint connectionbetween said mount" and` said standard, means for adjusting said standard to diiierent elevations, a'motor supported on' said mount, a reciprocable carriage on said mount'and movable with relation thereto, a tool, a holdertherefor, a driving shaft having driving connection with said tool holder, said driving shaft being mounted onA said carriage and 'movable longitudinally 'therewith 40 and- ,driving connection between ysaid shaftland said inotor WheIebysaid shaft may be rotated' independently of its longitudinal re! ciprocable-m'ovement, l' v 11. In apolishing machine, abase to support the driving mechanism, saidbase hav- .ing bearings whereby it is adapted to be pivotally connected with a standard andhaving lugs adapted'zto Support a inotor.two upwardly projecting.l ears on opposite sides of said base having outwardly projecting roll ers pivoted thereto and two outwardly projecting blocks below said rollers 'with a space between each of saidrollers and its companion block for the passage 'of a track har, two Adownwardlyprojecting ears'on opf posite sides of said base having outwardly projecting rollers journaled therein, two -outwardly projecting lugsabove said last 'mentioned set of rollers ,with a space between each lug and its companion lroller 'adapted for the passage of a track bar, said rollers and blocksoiieach side. of the base -bcing so positionedwith relation to each other astoprovide both-a. roller and a block.

tool with said rotary 'said base having outwardly projecting rollers pivoted thereto andl two outwardlyv4 proa downwardly projecting ears on opposite sides "track bars beingV reciprocable on said supf 4 a tool' with saidrotary shaft'.

- snppmft.I Vfor the under side ofa track bar oii each side ofthe base and a block and at. roller sup rt .for the iipper side of each of said track ars.

12. In apolishing machine, a base for the support of the driving mechanism, said base 'having bearings whereby'it is adapted to be pivotally connected with a standard and having lugs adapted to support a motor, two up-' Wardly projecting ears on opposite sides .of

jecting blocks below said rollers with aspace.- between each ofsaid rollers and its companion block for the passage of a track bar, two

of said base having outwardlyv projecting rollersl journaled therein, two outwardly projecting lugs above said last mentioned set of rollers with a spacel'between each lng and its companion roller adapted for the passage of. a track bar, saidv rollers and blockson'each side of the base being so positioned with Vrelation to eachother as to provide botha roller and a block support for the under side of a trackbar on each side of the base and' a block anda roller sup port for the upper side of said track bars2 a portion of said base betweenits two opposite sides being :formed with a troughA portion curved in cross section adapted to serve as a boX for a shaft. i

1B. In a polishing'machine, abase, a standard therefor, two parallel trackbars, antifrictionsupports carried by said base on which said track bars are supported, said portswith relation to said base, a rotatable shaft connected with said track bars and re.-

ciprocable .therewith independently of its rotarymovemenn'means,for rotating said 105v j shaft and means for operatively 'connecting 14. In a polishing machine, a ard therefor', two parallel track bars, antifriction support-s carried. by said base on` whichA said track bars 'are supported, said track bars being reciprocable on said supports with relation to said base, `a rotatable shaft connected with Said track bars and recipro'cable therewith vinidependently of its ro. 115

'tary ,movemenn means for rotating saidv shaft, a tool holder and a support thereiorv carried by said track bars and driving mech-- anism for thevtool holder operatively connecting the tool holder and said rotary shaft.

15; In a polishing machine, a reciprocable carriage, a support for said carriage having ways on which said carriage moves, a rotaryA shaft journaled to and carried by Said carriage independently of its rotary movement,

said shaft having a non-circular portion, a

gear wheel iloosely mounted on said non-circular portion'andhavinga .slotted hollow hub through which the non-circular portion j of the shaft passes, two anti-,friction rollers journaled'in said slotted hub having a space between them between which the said non- `circular portion of the shaft passes, said shaft being reciprocable between siaid rollers and having flattened faces engaged by said rollers whereby rotary movement of said gear wheel is communicated to said shaft.

lt. In a polishing machine, a reciprocable carriage,.a support for said carriage having ways on which said carriagemoves, a rotary shaft journaled toand carried by said carriage independently of its rotary moyement,

-' shaft.

17. In a polishing machine, a base for tha apparatus, a standard on which said base is mounted and having a universal joint connection therewith, whereby the mount isv adapted to be rotated on a vertical axis and to be rocked on a horizontal axisa stand having a plurality ofleos and having a socket through which sai .standard passes and clamping means whereby said standard may be clamped within said socket.to adjustv it to varying elevations.

18. In apparatus of the character described a base, a support on which the base is pivoted whereby the base may be rocked in a vertical plane, a standard on which said support is mounted and having a swivel connection. therewith whereby said support and base may have a swiveling movement in a horizontal plane, a vmotor mounted on said base, a carriage mounted on said base and adapted to have a sliding movement thereon,

a rotary shaft carried by said carriage so as 'to move thereon and having a slidingrmovement in a box which forms a part of said base, a gear wheel mounted upon said shaft having suitable driving connection with the motor, said gear wheel having a hollow hub projecting from one side thereof and a hollow slotted hub projecting from the other side thereof, said shaft passing through both of said hollow hubs, said shaft being noncircular in cross-section for a portion of its length intermediate its ends where it passes through said hubs and for some distance beyond said hubs, a pair of anti-friction rollers pivoted in'said hollow hub spaced apart to allow the saidnon-circular portion of the shaft to pass between said rollers, the rear end of said shaft being journaled in a suitable support and the forward end of said shaft having a gear mounted thereon, a

second shaft having a gear mounted thereon y connected with said lirst mentioned gear, a case for'said last mentioned gears supported by said carriage, said second shaft extending through the bottom of said case, and a tool havin a universal said secon shaft.

419. In a polishing machine, a base Yon which the apparatus is mounted,l a cross head in which said base is pivoted so as to rock in ay vertical plane, a vertical standard on which said cross head is mounted to swivel in a horizontal plane, and a tripod having a socket lhead in which said vertical standard is adjustably clamped whereby the said standard may be vertically adjusted.

20. In a polishing machine, a base on whichv the apparatus is supported, a vertical rod onwhich said base is mounted, and a tripod having a socket head in which said joint connection with vertical standard is adjustably 'clampedwhereby the said standard may be vertically adjusted, and means for clamping said rod in its adjusted position.

In testimony whereof I aiix my signature, in presence of two witnesses.

' ERCOLE CAVICCHI.

Witnesses: l

- .WILLIAM A. COPELAND, ALICE H. MORRISON. 

